Table 9
Space velocities for members and candidate members of the Chamaeleon associations.
| Name | U | V | W | U LSR | V LSR | W LSR | Notes |
| (km s-1) | (km s-1) | (km s-1) | (km s-1) | (km s-1) | (km s-1) | ||
|
|
|||||||
| Chamaeleon I cloud | |||||||
| T3A | −1.8 ± 7.3 | −13.2 ± 3.4 | −4.6 ± 5.8 | −10.3 | 0.2 | 1.9 | |
| SY Cha | 8.5 ± 3.3 | −17.5 ± 1.4 | −4.8 ± 2.5 | −0.0 | −4.1 | 1.7 | |
| Sz 4 | −1.1 ± 5.3 | −16.3 ± 3.2 | −7.4 ± 5.6 | −9.6 | −2.9 | −0.9 | |
| TW Cha | 5.9 ± 1.7 | −19.0 ± 1.3 | −7.0 ± 1.6 | −2.6 | −5.7 | −0.5 | |
| CR Cha | 7.6 ± 1.5 | −18.8 ± 1.0 | −7.3 ± 1.6 | −0.9 | −5.5 | −0.8 | |
| CS Cha | 7.9 ± 1.5 | −19.1 ± 1.0 | −6.6 ± 2.1 | −0.6 | −5.7 | −0.1 | |
| CT Cha | 6.1 ± 1.6 | −18.0 ± 0.8 | −8.6 ± 1.3 | −2.4 | −4.6 | −2.2 | |
| T21 | 14.3 ± 3.3 | −20.9 ± 1.4 | −8.8 ± 2.0 | 5.8 | −7.5 | −2.3 | |
| DI Cha | 3.4 ± 1.5 | −13.8 ± 1.0 | −11.8 ± 1.3 | −5.1 | −0.4 | −5.3 | |
| VV Cha | 6.0 ± 1.9 | −17.6 ± 1.4 | −11.2 ± 1.5 | −2.5 | −4.2 | −4.7 | |
| VW Cha | 6.1 ± 1.6 | −17.5 ± 1.2 | −10.5 ± 2.4 | −2.4 | −4.1 | −4.9 | |
| CHXR 37 | 8.7 ± 2.8 | −16.6 ± 3.4 | −10.4 ± 6.7 | 0.2 | −3.2 | −3.9 | |
| VZ Cha | 6.1 ± 1.7 | −17.5 ± 1.2 | −10.5 ± 2.4 | −2.4 | −4.1 | −4.0 | |
| T46 | 8.8 ± 1.9 | −16.5 ± 1.2 | −10.0 ± 1.5 | 0.3 | −3.1 | −3.6 | |
| CHXR 47 | 7.4 ± 1.9 | −17.5 ± 1.9 | −8.5 ± 1.6 | −1.1 | −4.2 | −2.0 | |
| CHX 18N | 8.5 ± 3.3 | −17.5 ± 1.4 | −4.8 ± 2.5 | −0.0 | −4.1 | 1.7 | |
| CHX 20 | 14.3 ± 3.3 | −20.9 ± 1.4 | −8.8 ± 2.0 | 5.8 | −7.5 | −2.3 | |
| CV Cha | 6.1 ± 5.0 | −18.3 ± 1.8 | −8.1 ± 2.9 | −2.4 | −4.9 | −1.6 | (1) |
| RX J1129.2-7546 | 10.8 ± 2.0 | −16.2 ± 2.0 | −10.0 ± 1.3 | 2.3 | −2.8 | −3.5 | |
| RX J1158.5-7913 | 5.7 ± 2.8 | −16.1 ± 2.3 | −8.8 ± 1.7 | −2.8 | −2.8 | −2.3 | (2) |
| Mean values (σ) | 7.0 (3.8) | −17.4 (1.9) | −8.4 (2.1) | −1.5 (3.8) | −4.1 (1.9) | −2.0 (2.1) | |
|
|
|||||||
| Chamaeleon II cloud | |||||||
| Sz 46N | 2.0 ± 5.5 | −25.0 ± 2.9 | 15.4 ± 15.9 | −6.5 | −11.6 | 21.9 | |
| IRAS 12535-7623 | 14.7 ± 3.3 | −18.4 ± 2.4 | −12.0 ± 2.4 | 6.2 | −5.1 | −5.6 | |
| Sz 50 | 12.4 ± 3.5 | −21.9 ± 2.5 | −7.7 ± 3.1 | 3.9 | −8.5 | −1.2 | |
| RX J1303.1-7706 | 16.6 ± 2.7 | −24.0 ± 1.8 | −7.8 ± 1.5 | 8.1 | −10.6 | −1.3 | |
| Hn 23 | −14.5 ± 16.8 | −12.6 ± 11.4 | 11.5 ± 18.1 | −23.0 | 0.8 | 18.0 | |
| Sz 58 | 14.0 ± 6.9 | −22.1 ± 5.7 | −8.2 ± 3.8 | 5.5 | −8.7 | −1.7 | |
| Sz 59 | 8.5 ± 2.7 | −17.5 ± 2.6 | −12.7 ± 3.0 | 0.0 | −4.2 | −6 | |
| Sz 60W | 30.5 ± 14.4 | −34.8 ± 10.1 | −6.6 ± 4.8 | 22.0 | −21.4 | −0.1 | |
| Sz 61 | 12.0 ± 2.9 | −20.7 ± 2.9 | −6.9 ± 1.8 | 3.5 | −7.4 | −0.4 | |
| Mean values (σ) | 10.7 (11.4) | −21.9 (5.8) | −3.9 (9.5) | 2.2 (11.4) | −8.5 (5.8) | 2.6 (9.5) | |
|
|
|||||||
| ϵ Chamaeleontis cluster | |||||||
| CM Cha | 9.6 ± 4.8 | −26.3 ± 3.3 | 1.0 ± 4.8 | 1.1 | −13.0 | 7.5 | (3) |
| T Cha | 18.1 ± 13.6 | −28.9 ± 7.5 | −16.9 ± 3.6 | 9.6 | −15.5 | −10.4 | (1, 4) |
| DW Cha | 12.2 ± 1.5 | −19.9 ± 1.9 | −9.1 ± 0.7 | 3.7 | −6.5 | −2.6 | |
| RX J1159.7-7601 | 12.3 ± 1.6 | −19.7 ± 1.9 | −10.3 ± 1.0 | 3.8 | −6.3 | −3.9 | |
| HD 104467 | 14.0 ± 1.4 | −17.1 ± 1.8 | −9.5 ± 0.6 | 5.5 | −3.7 | −3.0 | |
| RX J1219.7-7403 | 12.7 ± 2.3 | −21.1 ± 2.1 | −8.5 ± 1.1 | 4.2 | −7.7 | −2.0 | |
| RX J1239.4-7502 | 11.9 ± 1.8 | −20.6 ± 1.9 | −10.8 ± 1.3 | 3.4 | −7.2 | −4.3 | |
| DZ Cha | 13.8 ± 1.9 | −18.3 ± 1.9 | −12.8 ± 1.1 | 5.3 | −4.9 | −6.3 | |
| GSC 9420-0948 | 16.3 ± 2.0 | −13.1 ± 2.0 | −7.5 ± 1.1 | 7.8 | 0.3 | −1.0 | |
| GSC 9416-1029 | 12.7 ± 1.4 | −17.6 ± 1.8 | −7.5 ± 1.2 | 4.2 | −4.2 | −1.0 | |
| GSC 9239-1572 | 9.4 ± 1.8 | −24.9 ± 1.9 | −8.9 ± 1.0 | 0.9 | −11.5 | −2.4 | |
| CP-68 1388 | 11.3 ± 1.3 | −21.2 ± 0.6 | −6.8 ± 1.2 | 2.8 | −7.8 | −0.3 | |
| HD 105923 | 10.1 ± 1.4 | −20.6 ± 0.8 | −9.8 ± 0.9 | 1.6 | −7.2 | −3.3 | |
| GSC 9415-2676 | 11.2 ± 1.8 | −18.5 ± 1.9 | −11.3 ± 1.2 | 2.7 | −5.1 | −4.8 | |
| CD-69 1055 | 11.7 ± 1.4 | −21.7 ± 0.9 | −10.0 ± 0.7 | 3.2 | −8.3 | −3.5 | |
| MP Mus | 12.0 ± 0.9 | −21.6 ± 0.6 | −9.3 ± 0.9 | 3.5 | −8.2 | −2.8 | |
| RX J1123.2-7924 | 7.3 ± 1.5 | −9.9 ± 1.9 | −17.2 ± 1.0 | −1.2 | 3.5 | −10.7 | (5) |
| RX J1216.8-7753 | 10.2 ± 1.5 | −19.8 ± 1.8 | −10.3 ± 0.8 | 1.7 | −6.4 | −3.8 | |
| Mean values (σ) | 12.1 (2.4) | −20.0 (4.1) | −9.7 (3.7) | 3.6 (2.4) | −6.6 (4.1) | −3.2 (3.7) | |
|
|
|||||||
| η Chamaeleontis cluster | |||||||
| EG Cha | 9.5 ± 0.9 | −20.0 ± 1.4 | −11.1 ± 1.6 | 1.0 | −6.7 | −4.6 | |
| EM Cha | 15.0 ± 1.2 | −8.4 ± 1.7 | −6.6 ± 1.8 | 6.5 | 4.9 | −0.1 | |
| EO Cha | 11.8 ± 1.2 | −17.6 ± 1.5 | −11.0 ± 1.7 | 3.3 | −4.2 | −4.6 | |
| EQ Cha | 11.4 ± 1.1 | −20.7 ± 1.5 | −11.7 ± 1.7 | 2.9 | −7.3 | −5.2 | |
| RX J0850.1-7554 | 10.3 ± 0.8 | −20.2 ± 1.4 | −2.7 ± 1.6 | 1.8 | −6.9 | 3.8 | |
| RX J0902.9-7759 | 13.4 ± 1.1 | −14.2 ± 1.5 | −9.9 ± 1.6 | 4.9 | −0.8 | −3.4 | |
| RX J0915.5-7608 | 7.7 ± 1.2 | −22.8 ± 1.5 | −11.0 ± 1.5 | −0.8 | −9.4 | −4.5 | |
| HD 82879 | 7.0 ± 1.0 | −19.2 ± 1.5 | −8.3 ± 1.4 | −1.5 | −5.8 | −1.8 | |
| RX J0935.0-7804 | 9.4 ± 1.0 | −17.4 ± 1.6 | −7.5 ± 1.4 | 0.9 | −4.0 | −1.1 | |
| HD 86356 | 13.4 ± 0.9 | −20.7 ± 1.6 | 0.9 ± 1.4 | 4.9 | −7.3 | 7.4 | |
| RX J1001.1-7913 | 12.5 ± 1.1 | −20.9 ± 1.8 | 2.0 ± 1.6 | 4.0 | −7.6 | 8.6 | |
| RX J1140.3-8321 | 12.7 ± 1.2 | −21.7 ± 1.8 | 2.5 ± 1.2 | 4.2 | −8.3 | 8.9 | |
| Mean values (σ) | 11.2 (2.3) | −18.7 (3.8) | −6.2 (5.2) | 2.7 (2.3) | −5.3 (3.8) | 0.3 (5.2) | |
Notes.(1) The distance inferred from the Hipparcos parallax (Table 5) was used in the calculation. (2) Assuming the distance to ϵ Cha for this star, the following space velocities are obtained (U,V,W) = (2.0 ± 2.0, −14.5 ± 2.0, −7.2 ± 1.2) km s-1. (3) If the distance to Cha II is assumed for this object, the resulting space velocities are (U,V,W) = (20.6 ± 8.0, −34.5 ± 5.5,3.9 ± 7.7) km s-1. (4) With a parallax π = 15.06 ± 3.31, we obtain for this star (U,V,W) = (1.5 ± 7.0, −21.5 ± 8.1, −10.2 ± 3.7) km s-1. (5) Assuming the distance to Cha II for this star, we obtain (U,V,W) = (14.5 ± 3.2, −10.8 ± 2.4, −25.7 ± 1.6) km s-1.
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